Quote:
Originally Posted by scootertrash
After decreasing the N120 load, I still experienced not what I'd call hard bolt lift, but difficulty at the top of the bolt lift and the ominous clicking. I had read, perhaps here, that once brass starts the bolt clicking, it will always remain. So, I got new brass and experimented some more. 17.2 grains shoots rather nicely, the bolt opens smoothly, and no clicking. The velocity is just at 3700 in 55° temps, and chrono testing over on the eastern plains a couple weeks ago showed 3732 in 85° temps with no issues.
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What is this “clicking” problem?
I think I have seen someone mention it before but I have never read an explanation of the cause. I assume the culprit is pressure, but exactly what part of the bolt or brass is making the clicking sound and why?